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authorJeff Dike <jdike@addtoit.com>2006-01-06 00:18:55 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:33:46 -0800
commit1f80171e81ed0d08dcdb6efe239d7b929aef498f (patch)
treef6f72268ddee265b46ceb698cdff6daa7cba6250
parent418e55d49b0ec7d2e7a033f2dd083f5b2ab7d119 (diff)
downloadlinux-linaro-stable-1f80171e81ed0d08dcdb6efe239d7b929aef498f.tar.gz
[PATCH] uml: move console configuration
This patch changes when console devices are configured in order to prepare the ground for the next patch. parse_chan_pair is now done earlier, when initcalls are run, rather than when the device is opened. When a host device disappears, the channel list is closed, but not freed. This is required by the previous change. line_config now takes the options structure as an argument, and line_open doesn't. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/um/drivers/chan_kern.c14
-rw-r--r--arch/um/drivers/line.c34
-rw-r--r--arch/um/drivers/ssl.c6
-rw-r--r--arch/um/drivers/stdio_console.c6
-rw-r--r--arch/um/include/line.h7
5 files changed, 35 insertions, 32 deletions
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 59c9b3f7c840..31b69c4ea800 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -311,14 +311,12 @@ int console_write_chan(struct list_head *chans, const char *buf, int len)
int console_open_chan(struct line *line, struct console *co,
struct chan_opts *opts)
{
- if (!list_empty(&line->chan_list))
- return 0;
+ int err;
+
+ err = open_chan(&line->chan_list);
+ if(err)
+ return err;
- if (0 != parse_chan_pair(line->init_str, &line->chan_list,
- co->index, opts))
- return -1;
- if (0 != open_chan(&line->chan_list))
- return -1;
printk("Console initialized on /dev/%s%d\n",co->name,co->index);
return 0;
}
@@ -596,13 +594,11 @@ void chan_interrupt(struct list_head *chans, struct work_struct *task,
tty_hangup(tty);
line_disable(tty, irq);
close_chan(chans);
- free_chan(chans);
return;
}
else {
if(chan->ops->close != NULL)
chan->ops->close(chan->fd, chan->data);
- free_one_chan(chan);
}
}
}
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 1352a212964a..da81d22ec04a 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -419,8 +419,7 @@ void line_disable(struct tty_struct *tty, int current_irq)
line->have_irq = 0;
}
-int line_open(struct line *lines, struct tty_struct *tty,
- struct chan_opts *opts)
+int line_open(struct line *lines, struct tty_struct *tty)
{
struct line *line;
int err = 0;
@@ -436,13 +435,11 @@ int line_open(struct line *lines, struct tty_struct *tty,
err = -ENODEV;
goto out;
}
- if (list_empty(&line->chan_list)) {
- err = parse_chan_pair(line->init_str, &line->chan_list,
- tty->index, opts);
- if(err) goto out;
- err = open_chan(&line->chan_list);
- if(err) goto out;
- }
+
+ err = open_chan(&line->chan_list);
+ if(err)
+ goto out;
+
/* Here the interrupt is registered.*/
enable_chan(&line->chan_list, tty);
INIT_WORK(&line->task, line_timer_cb, tty);
@@ -558,8 +555,10 @@ int line_setup(struct line *lines, unsigned int num, char *init)
return n == -1 ? num : n;
}
-int line_config(struct line *lines, unsigned int num, char *str)
+int line_config(struct line *lines, unsigned int num, char *str,
+ struct chan_opts *opts)
{
+ struct line *line;
char *new;
int n;
@@ -572,10 +571,14 @@ int line_config(struct line *lines, unsigned int num, char *str)
new = kstrdup(str, GFP_KERNEL);
if(new == NULL){
printk("line_config - kstrdup failed\n");
- return -ENOMEM;
+ return 1;
}
n = line_setup(lines, num, new);
- return n < 0 ? n : 0;
+ if(n < 0)
+ return 1;
+
+ line = &lines[n];
+ return parse_chan_pair(line->init_str, &line->chan_list, n, opts);
}
int line_get_config(char *name, struct line *lines, unsigned int num, char *str,
@@ -677,7 +680,7 @@ struct tty_driver *line_register_devfs(struct lines *set,
static DEFINE_SPINLOCK(winch_handler_lock);
static LIST_HEAD(winch_handlers);
-void lines_init(struct line *lines, int nlines)
+void lines_init(struct line *lines, int nlines, struct chan_opts *opts)
{
struct line *line;
int i;
@@ -692,6 +695,11 @@ void lines_init(struct line *lines, int nlines)
line->init_str = kstrdup(line->init_str, GFP_KERNEL);
if(line->init_str == NULL)
printk("lines_init - kstrdup returned NULL\n");
+
+ if(parse_chan_pair(line->init_str, &line->chan_list, i, opts)){
+ printk("parse_chan_pair failed for device %d\n", i);
+ line->valid = 0;
+ }
}
}
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index e1895d9babbe..6823dc5d665c 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -84,7 +84,7 @@ static struct lines lines = LINES_INIT(NR_PORTS);
static int ssl_config(char *str)
{
- return line_config(serial_lines, ARRAY_SIZE(serial_lines), str);
+ return line_config(serial_lines, ARRAY_SIZE(serial_lines), str, &opts);
}
static int ssl_get_config(char *dev, char *str, int size, char **error_out)
@@ -100,7 +100,7 @@ static int ssl_remove(int n)
int ssl_open(struct tty_struct *tty, struct file *filp)
{
- return line_open(serial_lines, tty, &opts);
+ return line_open(serial_lines, tty);
}
#if 0
@@ -202,7 +202,7 @@ int ssl_init(void)
serial_lines,
ARRAY_SIZE(serial_lines));
- lines_init(serial_lines, ARRAY_SIZE(serial_lines));
+ lines_init(serial_lines, ARRAY_SIZE(serial_lines), &opts);
new_title = add_xterm_umid(opts.xterm_title);
if (new_title != NULL)
diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index 72000d3a19ee..6d4edda9b510 100644
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -91,7 +91,7 @@ struct line vts[MAX_TTYS] = { LINE_INIT(CONFIG_CON_ZERO_CHAN, &driver),
static int con_config(char *str)
{
- return line_config(vts, ARRAY_SIZE(vts), str);
+ return line_config(vts, ARRAY_SIZE(vts), str, &opts);
}
static int con_get_config(char *dev, char *str, int size, char **error_out)
@@ -106,7 +106,7 @@ static int con_remove(int n)
static int con_open(struct tty_struct *tty, struct file *filp)
{
- return line_open(vts, tty, &opts);
+ return line_open(vts, tty);
}
static int con_init_done = 0;
@@ -169,7 +169,7 @@ int stdio_init(void)
return -1;
printk(KERN_INFO "Initialized stdio console driver\n");
- lines_init(vts, ARRAY_SIZE(vts));
+ lines_init(vts, ARRAY_SIZE(vts), &opts);
new_title = add_xterm_umid(opts.xterm_title);
if(new_title != NULL)
diff --git a/arch/um/include/line.h b/arch/um/include/line.h
index 351d3ac30b78..474398ba1207 100644
--- a/arch/um/include/line.h
+++ b/arch/um/include/line.h
@@ -74,8 +74,7 @@ struct lines {
#define LINES_INIT(n) { num : n }
extern void line_close(struct tty_struct *tty, struct file * filp);
-extern int line_open(struct line *lines, struct tty_struct *tty,
- struct chan_opts *opts);
+extern int line_open(struct line *lines, struct tty_struct *tty);
extern int line_setup(struct line *lines, unsigned int sizeof_lines,
char *init);
extern int line_write(struct tty_struct *tty, const unsigned char *buf,
@@ -99,11 +98,11 @@ extern struct tty_driver * line_register_devfs(struct lines *set,
struct tty_operations *driver,
struct line *lines,
int nlines);
-extern void lines_init(struct line *lines, int nlines);
+extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts);
extern void close_lines(struct line *lines, int nlines);
extern int line_config(struct line *lines, unsigned int sizeof_lines,
- char *str);
+ char *str, struct chan_opts *opts);
extern int line_id(char **str, int *start_out, int *end_out);
extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n);
extern int line_get_config(char *dev, struct line *lines,